Support sheldon (#487)

src/config.rs

@@ -106,6 +106,7 @@ pub enum Step {
     Powershell,
     CustomCommands,
     Yadm,
+    Sheldon,
 }
 
 #[derive(Deserialize, Default, Debug)]

src/main.rs

@@ -273,6 +273,7 @@ fn run() -> Result<()> {
     runner.execute(Step::Composer, "composer", || generic::run_composer_update(&ctx))?;
     runner.execute(Step::Krew, "krew", || generic::run_krew_upgrade(run_type))?;
     runner.execute(Step::Gem, "gem", || generic::run_gem(&base_dirs, run_type))?;
+    runner.execute(Step::Sheldon, "sheldon", || generic::run_sheldon(&ctx))?;
 
     #[cfg(target_os = "linux")]
     {

src/steps/generic.rs

@@ -53,6 +53,14 @@ pub fn run_gem(base_dirs: &BaseDirs, run_type: RunType) -> Result<()> {
     run_type.execute(&gem).args(&["update", "--user-install"]).check_run()
 }
 
+pub fn run_sheldon(ctx: &ExecutionContext) -> Result<()> {
+    let sheldon = utils::require("sheldon")?;
+
+    print_separator("Sheldon");
+
+    ctx.run_type().execute(&sheldon).args(&["lock", "--update"]).check_run()
+}
+
 #[cfg(not(any(
     target_os = "freebsd",
     target_os = "openbsd",